5.5psi out of the box.

This is true of any kit, but some kits are more idiot proof than others....Greddy is definately not idiot proof.

 

ok well screw it. IMO people who drive around on stock cars with FI bolted on are stupid. Yeah I said that. Not enough traction. They spin out their tires and think it's cool.

I own a vortech car and I know how it works. It's not only good for gears 3-6 - I didn't say that now did I? I said those are the gears the vortech would have the CLEAR advantage in because those are the gears you're in towards redline.

You might not know this but each time you change gears, you're either a lot or a little closer to redline than when you first shifted into the previous gear depending on the gear. When you first shift into 2nd the car goes down to just over 4k rpms - the vortech is making 2/3 of it's full boost right there, the stillen is making full boost - but the vortech will increase while the stillen will decrease. So IMO 2nd gear is a wash between the vortech/stillen battle. When you first shift into 3rd gear you're at 4500 rpms, then 3rd thru 6th are around 5000 with about 40rpms higher each time. I can give you exact numbers, but they vary a little cause no one shifts EXACTY at redline at the exact speed

Stillen has a lot more tq on the lower half of the rpm band. The vortech can and does make up for it by using a 3.12 or 2.87 pulley, 3.9 final drive, and light drivetrain parts and some key breathing parts like headers, cams, HF cats, etc

yeah now you're going to sit here and say "WTH do you need all that for when the stillen has it from the get-go?" well let's see your wimpy street tires launch if the stillen had all that stuff? doubtful you'd get good traction. It works fine with the vortech though at launch because it brings up the launch capability up to the stillen level. What ground it loses in power it makes up with rpm speed increase and gear tq.

Then once you're on your way the car makes power cause all that stuff helps up high too - especially cams, headers, exhaust, HF cats, etc.

My car spends about an eye blink below 3k rpms in 1st gear. I really don't care if the stillen makes higher power/tq numbers in that range cause I have that area covered as is - I mean I launch at about 3k...remember the vortech's small tq can be made up for with rpm speed with launching higher. If I had better tires than my 295 ps2's, I could launch at a higher rpm even. I don't give a damn if the stillen can launch at 1500rpms on normal stock street tires

How's that for a street car? Yeah for bang for your buck for street driving with junk street tires, the stillen is great. If you want to go up to the next level the vortech is where it's at. If you want to really get up to the next level you get a turbo, drag radials or street legal competition tires and the whole 9 yards. No crap a full out turbo or vortech setup isn't cheap, so go be happy in your low cost stillen solution while the rest of us pass you with 100+ more whp

Tires are extremely important to me which is why I currently run 295 michelin PS2's in the rear of my car and am switching to 315 yokohama A048 or Nitto NT-01's pretty soon. Cause I think it's rediculous to run big power without big traction. So yeah the "stock car" hypothetical racing is stupid cause only idiots go out and buy a turbo and call it a day. Those idiots deserve to sit there spinning tires and be slower

I really have no idea what to say other than you have to look at the whole picture of how you design your car. The stillen system is a finite system. Not many people are very close to 400whp with it. People are making 475whp on the vortech. Most all dynos you see of the stock vortech is with the stock pulley which is pretty weak. Just changing pullies to the next size up will net you like 25whp across the entire board. If you run the 2.87 pulley, that brings power at 1000 rpms up a good amount. It might not equal the stillen, but it isn't bad either.

My car is faster than my dad's C6 and he has more tq than even a stillen kit at 1000-3000 rpms, and I still beat him without much contest with him having a mid to high 12 sec car and me having a low to mid 12 sec car. The key is I don't race at 1000-3000rpm's and a lot of races that happen in day to day traffic end up being from a roll anyway where you can just downshift before you go.

Don't know what else to say man. But don't listen to me, I don't know what I'm talking about and am just here to spread misinformation for the hell of it I am a magazine racer afterall with no other knowledge of car performance

 

Like I said, show me where the Vortech makes more power than the Stillen under 5500rpm. 5500+ the vortech only makees slightly more power than Stillen Stage2 kit.

Until then Stillen still has the most power off idle till 5500rpm.

I would like to see the info you present all us about the Vortech being more powerful (in peak #) but in a race its not. Unless you plan to hit 150.

 

what do you want me to do - bring you some dyno charts?

it isn't all about hp and tq. - there's rotational mass, gearing, traction, curb weight, how fast the car transfers weight onto the rear tires. Those things don't show up on dyno charts. Well they can if you map out mph vs hp or tq, or hp/tq vs time, but typical charts show power vs rpm that people tune with and post up online

a lot of dynocharts don't even bother showing anything below 3k cause no one really cares about 2k

I'm not saying the vortech can have as much power in the 1-4k range, but has ways of more than making up for it and I'm sorry if you think that isn't true. I have nothing to gain by any of this conversation

 

here's one chart of a vortech

 

Show me MEAN numbers. Right its not all about hp and tq peak #s, its all about the area under the curve and that is why the Stillen is one of the best SC to get.

LOL. Like I said, show me the mean numbers. Right you don't because you don't have that info.

 

hahaha, this has made a left turn and became a Vortech vs Stillen. Man, I'm learning so much about stillen here that I'm considering it now. There's just so many thing that can go wrong with a Turbo and for the past few weeks there's so many blown engine especially on my350.

My only problem with Stillen is that it doesn't have any BOV (or do they?)

 

Wow, definitely a non-stock pulley Vortech making more power than Vortech advertises.

 

I agree. If you were to go a turob JWT would probably be the safest kit to go with. SC would be Stillen. With Vortech 2nd and ATI a far last for reliability.

 

yeah....that's a 2.87 pulley - not too horrible huh?



as far as mean numbers - what are we comparing? Seriously I can calculate mean area under the curve and am more than happy to show you how I do it. I can do hp and tq seperately and also average them together.

But we need to first decide on what we're comparing cause a 340whp stillen vs a 340whp vortech is a lame comparison caues no one runs 340whp on a vortech, everyone runs 370-450whp these days - and 340whp on a stillen is pretty high as is.

do you want me to go off the chart in the SPEED article? It makes 320whp at 6560rpm and 306 tq at 3930 rpm

so what are we comparing? Get me some graphs of a stillen and I'll calculate some % numbers of the area

 

JWT just came out so there's really any strong proof that they are more reliable than the other kits. Plus JWT dont have BOV either, I love the sound of a BOV and that's one of the reason I wanted a Turbo.

 

the JWT has some flaws in its design though that anyone who really wants power is going to upgrade - like the injectors and a return fuel line.

They're so concerned with passing CARB that they run the stock injectors at near dangerous levels if you were to go much higher than stock power levels

 

Even then I am willing to bet a Stage 4 Stillen vs a pullied Vortech the Stillen makes more power under 5500 still. But even Stage 4 helps the Stillen where 6k~ would be higher. I rather and any racer would rather have a flat torque curve instead of a linear.

Give me a stock Vortech Dyno that has the break down per 100 rpms increments. I have one for Stillens Stage2 already and we can go from there. I have the extra spreadsheet that will do the work for me.

 

Well JWT has always had a history of making a quality product. They been around for a very long time working on Nissans. I haven't heard of one issue yet with the JWT kit.

 

They are running less boost, and making more power with optimal tuning. Seems to me that is a safe area. I see nothing dangerous about that. And there kit makes the most power out of all the other kits out of the box.